Police: Best Friend Says He Planned Killing, Gives No Reason

"Fourteen is young but old enough to know what it means to slash someone's throat," said Helen Orvaschel, a psychology professor at Nova Southeastern University. "Under the circumstances, I have to assume something took place between these boys or the one who allegedly committed this act had a breakdown."

That the suspect has not given detectives an explanation for what happened seems to indicate he feels uncomfortable talking about what led to the slaying, Orvaschel said.

On Wednesday evening, about 300 parents and students gathered in an open field near the school's office for a candlelight vigil in Jaime's memory.

"We have asked ourselves how can this be," Principal Kristal Hickmon said. "We can't just let Jaime's death be in vain. ... Please let us stop pointing fingers at each other. Let's see what we can start doing now to make our students feel safer."